Britney Spears Engaged

Britney Spears is engaged to Jason Trawick, her former agent and boyfriend since 2009, ET confirms.

"She's really happy," a source tells ET. "It's going to be a great weekend."

Spears herself hinted at her engagement, which sources have been expecting for some time now, on Twitter Friday morning, writing: "OMG. Last night Jason surprised me with the one gift I've been waiting for. Can't wait to show you! SO SO SO excited!!!! Xxo."